package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @author ljj
 * @create 2022-11-16-13:44
 */
@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper,Category> implements CategoryService {
    @Autowired
    private DishService dishService;

    @Autowired
    private SetmealService setmealService;
    /**
     * 删除id
     * @param id
     */
    @Override
    public void remove(Long id) {
        //分类是否关联菜品
        LambdaQueryWrapper<Dish> lambdaQueryWrapper = new LambdaQueryWrapper();
        lambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count = dishService.count(lambdaQueryWrapper);
        if (count>0){
            throw new CustomException("当前分类关联菜品，不能删除");
        }
        LambdaQueryWrapper<Setmeal> SetmealqueryWrapper = new LambdaQueryWrapper();
        SetmealqueryWrapper.eq(Setmeal::getCategoryId,id);
        int count1 = setmealService.count(SetmealqueryWrapper);
        if (count1>0){
            throw new CustomException("当前分类关联套餐，不能删除");
        }
        removeById(id);
    }
}
